Spark arrester for locomotives



C. S. CHALFANT.

SPARK ARRESTER FOR LOCOMOTIVES.

APPLICATION FILED NOV. 26, I920. 1,408,075.

Patented Feb. 28, 1922.

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GQTTLER STRAzWNCHALFANT, or CHICAGO, mnmoxs,

srAnK. Altiinsrnn roit nocomorxvnsi I'AGSOW miwtmw wmm; 3' Ie' -r h iwnit tj ls'fl rr f' e e H?- lag r; gigcitize' i of; tile-United- States, e'nd' e fesiliehtof Chicago, in the county of Cook Jidt'ej 2;" Illinois; have invented a new ijid"u;sefi 1*'1iilp1;ovemenfi in Spark Arresters 61 Locomotives; of which the following i is elete'sltcfiiiiprovements locomotives; endit conthe coliihiiihtion; constructions and l lgiiiiit" h feitij described; ah'd claim d.

Kn" ohjectofinfy invention is to provlde a,- device for separating the sparks, cinder's, a'iidfother qnconsiiined" siib'stences' from the @n 'r et'ujrriihg the same to the furnace ofi' theiei gihef for further consumption,

thereby "the 'eflici'eiicji 0f the engine isi iii- .creeis'egl 'ehtl"lossfiresultihg 'from the igniting can he operative'ly apoliecl to" a locomotive en ii e'jo'f conven'tlio'im'l cons'triictionfwithout iiite r'fei'ingjin' any" waywith'the functioning of till e1 relatively movin parts ordinarily proi icleijthereih;

fiiltl' r. object; of-niy invention is p ovide 'a" device of the type described that iis'reliiti'velyl simple in constru'ction and operation, thoroughly effective for the purpose ihtend'ed; and practical" commercially;

Other obj efc'tsland' advantages will appear thej fcillowing specification," and the novel feetlirefs ofjlth'e iiiv'enti'o'n Will be particularly. poi itetl; out in the tep'pended claim;

M; invention;is'illiistrated in the accompgtiiyi n'gj drawings; forming part of-this' applicati n 51 hibhl ig re; 1 i's' a; side elevationshowing the fiiflefe'rred '5 form of the devioe'operatively a'ptoga; locomotive engine, portions being' Broken" awa'y and'other portions shown in section,

Figure Zis a front view of the mechanism shown; in" Fig'nre" 1",

Specification! Letters Pfitenti Eaten-teat i922. iip' ungti n" ie'ainovember 2's; 1920. Serial Hid. 4mm;

F igure 4 isi o front-view of the' lotjiginm t'ive engine illiistr'atecl in 3, sliiiiir"- mg the modified form ofithe dei icfidpefi atively applied. l

It 'is Welllmowni-thiz't a., large percentirgfe of the fuel. fed into ifii'r'r'raceo f mlocoihiithat therefore a; distinct ganii .ih-refliciez'fcy we e-e ee ediii e ehi fie stock" without beiiig-efitire'ly cen iii edje iilstackof an engiile z'isi ncc'zir'ripgttgtt'i\ ly Such ,a loss wilP-he obviatedwHerr-edeqi fite meansforpreventing ejectionidf spailts through, the smoke-stack are rovided? Devices 01-" whith I'm-mam fbeaoteiining the results set; "forth ehot et While no rlouht theoretically operative, {havef been found unsatisfact'or in aotuix'l -"seri'ricein that such devices iingol've complihiitd stri ctures, or interfere withfthe ,ortlihoryfiirictioningof operating ,partsiof -thts." eiigfiii'e. When my device is applied to w lbcoliioti've en gin'e, the resultssouglit ai e olitai'ned With- In carrying out myinvention- I may miilte use of a locomotive engine-tithe type fntcnde'tl for passenger seiv'ice,, Such-11s fie indicated genera llyat Tin" Figure 1-df' the 4 to divide the ihtelrib'rthereof intba water chamber 3 and an outlet chamhe'r5."The gases of combListionMfi-om a fire h'ox not shown, that is positionetl"in-thei rear-'part disposed innthe waterchember s md-fla en through the h'ezt'df'f into; the outlet? cliglrn -er 52 A." baiiiep lizte 7positi'o'iied1w'ithiii the ont- Jet @hmw detects th e ed-1 w: 1m

providiflp; a complicated .wardly extending spirally. e

. unconsumed inosphere.

tion passing from the tube 6 downwardly in the outlet chamber 5. The shell 2 is formed with its front end open, as at 8 and is also provided with a smoke stack 9.

The parts described so far are ordinary in construction and form no part of my invention except in so far as they cooperate with the parts about. to be described.

A plate 10 is fitted within theoutlet chamber 5 substantially parallel'witli the head 4 and to the rear of the Smokestack 9 as clearly shown in the drawings. The plate 10 is provided with a central opening 11 normally closed by acover plate 12 secured theretoiin' anysuitable rnanner as by means of bolts 13. 'The gases of combustion-de- .flecteddownwardly by the bailile plate 7 pass through an'opening 14 into a passage 15 between the exterior wall of the shell 2 and a saddle or cylinder block 16. From the pass'age15 the gases are-conducted through an opening-.16 into the outlet chamber 5 ad- 'jacentthe front end of theengine. A continuous spiral channel 17 within the outlet chambers is rovided by securin an indirecte fin 18 to theinner wall of the 5 ll 2 in anysuitable-manner as byweldingthe outer edge of the fin to the shell. One end of the channellicommunicateswith the opening 16' .while the other end thereof communicates various-parts of the device, the operation thereof may be=readily understood. The gases ofwcoinbustion passing through the .tubes. Gentrain cinders, sparks and partly consumed fuel substances. Such substances pass with the gases along the passage 15 and into the spiral channel 17. The exhaust pipe 2lfrom the power cylinders of the engine opens into the channel 17 at this point and: forces the ases of combustion and the V siilastances along the spiral channel 17 at a high velocity and under the influence of a centrifugal force, Air will be drawn from the atmosphere through the opening 8 as indicated by the arrows in Figure 1 and will entrain the light gases of com- .bustion from the channel 17, conducting the same through the smoke stack 9 to the at The cinders, sparks and other unconsumed particles will remain in the channel 17 on account of their relatively great weight and will pass therefrom into the tubular member 20 and thence to the furnace of the engine. It will thus be seen that the operation described will be repeated ,until all the solid substances fed into the furnace are reduced to a gaseous state.

pass through tubes 40 disposed in the. water chamber 32 that open through the head 31 into an outlet chamberr33 and are into a conduit 35 having a bell end 36 positioned directly above an exhaust pipe 34 from thepower cylinders. The conduit 35 is spirally di-rected as shown asses througha plate 37 that; is'fit'ted yvithinithe I outlet chamber 33 31. After assing. conduit 35 is continuedasa spirall "directed channel 38 that is .semi-cylindrica .in' cross parallel with the" head section and is arranged to conimunicate with a tubular member 39111; a point adjacent to roughthe ueys'r. the

the front end ofutheengine and near the throat of the smokestackel. The'tubular member 39 passes through the shell 30and extends gine.

to a furnace, not shown, I of the en- The operation of modified form at the device is similar'to t a of the Pi'fefled I form of. the same device as hereinbefore'set' forth. The ase sof combustion toether with the entrained cinders, sparks an other substances not entirely consumed in the furnace pass :Eromthe tubes 40 and .on account of the suction thereon created by the exhausting of steam from the powercylinders into the tube 36aredraw'n into the latter and passalong-thechannel'38. It will be noted that the convolution of the spiral channel adjacent. the frontendof theengine :has a portion of its lenth secured tothe shell 30 at the rear of t e smokef stack 41 while the .remainin portion thereof is secured to the shell 3 at the opposite side of I the smoke Ystackp Consequently the light gases of combustion will pass through the smoke stack while the. heavier finders,

sparks, and other substances will remain within the channel '38 and will pass there from into the tubular member 39 and thence be returned tothe furnace of the engine.

The device is'thoroughly eflfective for the purpose intended and can be installed in.

any en ine of standard construction at slight cost ant without interfering in any way with the normal operation thereof. it is therefore obvious that s great saving in fuel will result and that the efiiciency of the engine will be greatly increased.

I claim:

The combination with an outlet chamber at the front end of a locomotive engine, said outlet chamber being provided with astaek and an inlet for a pressure fluid'fof a. spiral conduit arranged in the outlet ch m r with one open end thereof positioned directly above the inlet for the pressure fluid and with the other open end thereof positioned directly beneath and adjacent to the stack orifice, means for conducting the gases of combustion from the fire tubes With the entrained unconsumed solid substances into position to enter the conduit at its first named end, and a declined conduit communicatin with the spiral conduit at its 10 last name end and leading to the fire box of the engine for conducting the unconsumed solid substances to the latter.

OOTTER STRAWN CHALFANT. 

